Kupo Screw Knob Set

The Kupo KS-170 Screw Knob Set includes two black aluminum die-cast knobs with stainless steel hardware, one fitted with a 3/8"-16 x 25mm bolt and nut, the other with a 1/4"-20 x 18mm bolt and nut, weighing 150g together. They're handy spare hand-tightening knobs for securing plates, brackets, or accessories that use either of these two common thread sizes.